TW201031094A - Display system - Google Patents

Display system Download PDF

Info

Publication number
TW201031094A
TW201031094A TW99103811A TW99103811A TW201031094A TW 201031094 A TW201031094 A TW 201031094A TW 99103811 A TW99103811 A TW 99103811A TW 99103811 A TW99103811 A TW 99103811A TW 201031094 A TW201031094 A TW 201031094A
Authority
TW
Taiwan
Prior art keywords
control
circuit
display device
charge pump
signal
Prior art date
Application number
TW99103811A
Other languages
Chinese (zh)
Other versions
TWI399908B (en
Inventor
Ssu-Chieh Yang
Yaw-Guang Chang
Hsien-Ting Huang
Original Assignee
Himax Tech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/370,585 external-priority patent/US8194060B2/en
Application filed by Himax Tech Ltd filed Critical Himax Tech Ltd
Publication of TW201031094A publication Critical patent/TW201031094A/en
Application granted granted Critical
Publication of TWI399908B publication Critical patent/TWI399908B/en

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)

Abstract

A display system includes a display device, a driving circuit, a flexible printed circuit (FPC), a charge pump circuit and a control circuit. The driving circuit is disposed on the display device, for driving the display device. The FPC is externally coupled to the display device. The charge pump circuit is disposed on the FPC, for generating at least an output voltage to the driving circuit. The control circuit is disposed on the display device and coupled to the driving circuit, for generating a plurality of control signals to control the charge pump circuit. The charge pump circuit has a plurality of control ports coupled to the control circuit for receiving the control signals generated from the control circuit, respectively.

Description

201031094 六、發明說明: 【發明所屬之技術領域】 本發明係_-種顯示系統,尤指—種將 電路設置在其顯示裝置外部之-敕性 ’ _hai:gepump) 轉換效率的顯示系統。 又。,、€/登 【先前技術】 ❹ 充電果係為-種直流電壓轉換別⑽。Dc eG_⑺其使用 電容作為儲存元件械立-個輪出賴更高或触龍更低的 電壓源。充電栗可使用-些形式的切換裝置來控制電壓至電容的連 接’此外’基於控制ϋ以及電路結構,充躲可產生雙倍電壓、三 倍電壓、半電壓、反向電壓、分數乘積、特定比例的電壓(例如χ3/2、 χ4/3、χ2/3等)或是任意的電壓。 ❹ 在傳統的中小尺寸薄膜電晶體液晶顯示(Thin Film201031094 VI. Description of the Invention: [Technical Field] The present invention relates to a display system, and more particularly to a display system in which a circuit is disposed outside the display device and has a conversion efficiency of 敕 _ hai:gepump. also. ,, € / Deng [Prior Art] 充电 Charging fruit is a kind of DC voltage conversion (10). Dc eG_(7) uses a capacitor as a storage element to set up a voltage source that is higher or lower. The charging pump can use some form of switching device to control the voltage-to-capacitor connection 'in addition' based on the control ϋ and the circuit structure, which can generate double voltage, triple voltage, half voltage, reverse voltage, fractional product, specific Proportional voltage (eg χ3/2, χ4/3, χ2/3, etc.) or any voltage. ❹ In traditional small and medium size thin film transistor liquid crystal display (Thin Film

Tmnsistor_Liquid Crystal Display,TFT-LCD)裝置上,隨著螢幕尺寸 越來越大,其所須消耗的電流也越來越大,此時若將充電泵電路設 置於薄膜電晶體液晶顯示裝置上的驅動電路端,則受限於銦錫氧化 物(Indium Tin Oxide,ITO)薄膜的電阻,其電壓轉換效率會因而變差。 4 201031094 +另二由於系統端希望能夠直接提供2.0V〜4.8V的輸入電壓給 ㈤體I顯4置上的驅動電路端,因此充電泵電路就必須 要月b夠支援不同倍數(例如i $倍、2倍或者3倍)的電麵換倍率來 提供所要的輸出電壓。 【發明内容】 ❹ 本發_目的之-在於提供-細示系統,以解決上述 之問題。 本發明係揭露—種顯示祕,其包含有—顯示裝置、—驅動電 路j -軟性印刷電路板、—充電泵電路以及-控制電路。該驅動電 路係设置於鞠示裝置上,用來驅動該齡裝置。錄性印刷電路 板係以外接方式_接於該顯示裝置。該充躲電路係設置於該軟性 印刷電路板上’用來產生至少一輸出電壓至該驅動電路。該控制電 ©路係設置於該顯稀置上並祕於娜動電路,絲產生複數個控 制訊號雖繼綠泵電路。魏縣電路具有__控制電路 的複數個控制埠’用來分別接收該控制電路所產生的該些控制訊號。 本發明另揭露一種顯示系統,其包含有一顯示裝置、一驅動電 路、一軟性印刷電路板、一充電泵電路以及一控制電路。該驅動電 路係設置於該顯示裝置上,用來驅動該顯示裝置。該軟性印刷電路 板係以外接方式耦接於該顯示裝置。該充電泵電路係設置於該軟性 201031094 印刷電路板上,用來產生至少—輸出電壓至該驅動電路。該控制電 路係设置於該顯示裝置上並输於馳動電路,用來產生一控制訊 號、控制該充電栗電路。該充電泵電路具她接於該控制電路的一 第控制埠帛來接收該控制電路所產生的該控制訊 二控制琿,用來接收一參考電壓。 乂及第 【實施方式】 在2明書及後續的申請專利範圍當中使用了某些詞棄來指稱特 2、以。所&gt;1領域巾具魏常知識者應可理解,硬體製造商可 二=^名詞來稱呼同樣的元件。本說明書及後續的中請專利^ 、: 稱的差異來作為區分元件的方式,而是以元件在功能上 「3」糸為一開放式的用語,故應解釋成「包含但不限定於」。 “耦接」—詞在此係包含任何直接及間接的電氣連接手段 τ亩垃文中&amp;述―第—裝置減於—第二裝置,則代表該第—事置 可直接電氣連接於兮笛—κ ^ ^ ^ 我置 電氣連接至該第二=或透過其他裝践連接手段間接地 在本翻之實關巾,充躲桃雜賴電晶體液晶 π置路巾移至軟性_電路板上,因《要考慮如何去抑制 ΓΓΓ印刷電路板上之充電泵電路的運作。請參考第!Π 本發明一實施例中顯示系統議的示意圖。顯示系統i00包 201031094 含有(但不侷限於)一顯示裝置110、一面板120、一驅動電路〗3〇、 一控制電路140、一軟性印刷電路板150以及一充電泵電路16〇。面 板120係設置於顯示裝置11〇上,而驅動電路13〇亦設置於顯示裝 置110上’用來驅動面板120。控制電路140亦設置於顯示裝置11〇 上並耦接於驅動電路130,用來產生複數個控制訊號,例如SC1/SC1, 以及SC2/SC2’,以控制充電泵電路160的運作。軟性印刷電路板 150係以外接方式耦接於顯示裝置11〇,而充電泵電路16〇則設置於 ❹軟性印刷電路板150上,用來根據控制電路140所產生的控制訊號 SC1/SC1’以及SC2/SC2’來產生至少一輸出電壓至驅動電路13〇。 此外,充電泵電路160包含有複數個控制埠(例如162j以及 162_2)、一充電泵單元164以及一處理單元166。於本實施例中, 控制埠162_卜162_2皆耦接於控制電路140,用以分別接收控制電 路H0所產生的控制訊號SC1/SC1,以及SC2/SC2,。充電录單元164 係用以產生至少該輸出電壓至驅動電路130。處理單元ι66係輔接 於控制埠162一 1、162_2以及充電泵單元164之間,用以藉由控制蟑 162_1、162_2來接收控制電路140所產生的控制訊號SC1/SC1,以 及SC2/SC2,,以及根據控制訊號SC1/SC1,以及SC2/SC2,來控制充 電泵單元164。充電泵電路160會根據控制訊號SC1/SC1,以及 SC2/SC2’來設定一泵浦倍數(pumping factor) PF1並產生兩個輸出電 壓VSP、VSN,其中輸出電壓VSP、VSN會被傳送至驅動電路13〇 •以供其使用。關於控制電路140與充電泵電路160之細部元件及其 相關運作,將於後續圖示以及實施例中再詳加說明。 201031094 睛注意,為讓本發明更顯而易懂,本實施例係配合圖式作詳細 說明,,然而’這並非本發明之限制。請同時參考第2圖以及第i圖, 第2圖從上而下依序為控制訊號SC1以及[、一時脈訊號 以及處理訊號81)1*。。挪的時序圖。控制電路“ο根據驅動電路no 的需求來產生控制訊號SC1以及SC2,以控制充電泵電路16〇。充 電泵電路160中的處理單元166係透過控制埠162—來分別 接收控制訊號SCI以及SC2,並執行一互斥或(exdusive〇r,x〇R) 運算於已接收之控制訊號SCI以及SC2,以產生第2 ®中所示之時 脈訊號sdwk並將其傳送至充電泵單元164。處理單元166係根據已 接收之控制sfl號SCI以及SC2來選擇性地產生資料訊號或指令 (c〇_and)訊號並送至充電泵單元164,舉例來說,如第2圖中所示, 處理單元166於控制訊號SC1以及SC2皆處於邏輯值”丨,,時產生一 重設(reset)訊號Rst (但此並非為本發明之限制,在其它實施例中, 處理單元166亦可於控制訊號SC1以及SC2皆處於邏輯值,,〇”時產 生一重設訊號);當控制訊號SCI處於邏輯值,,〇,,以及控制訊號SC2 處於邏輯值,T,時,處理單元166將邏輯值,,〇”設定於處理訊號 Sprocess 中, 以及當控制訊號SCI處於邏輯值”丨”以及控制訊號SC2 處於邏輯值,,0,,時,處理單元166將邏輯值”1”設定於處理訊號 SProcess中。因此,處理單元166可於兩個重設訊號如之間得到處理 況遽8?10(^的訊5虎值(例如第2圖中所示之邏輯值’’〇11〇〇’,),:^中處 理訊號SprQeess可為一資料訊號或一指令訊號。充電泵電路16〇可根 據時脈訊號sck)ek以及處理訊號sprocess來設定泵浦倍數PF1並產生兩 201031094 個輸出電壓Vsp、VSN,舉例來說,在本實施例中,充電泵電路160 根據邏輯值為”01100”的處理訊號Sp_s而將聚浦倍數PF1設定為 3/2。 在本發明之另-實施例中,控制電路14〇產生另外兩個控制訊 號SCI’以及SC2’來控制充電栗電路16〇。請同時參考第3圖以及第 1圖’第3圖從上而下依序為控制峨SC1’以及SC2,、—時脈訊號 參Scl°ck’以及一處理訊號Spraeess,的時序圖。處理單元166係透過控制埠 162_1、162一2來分別接收控制訊號SC1,以及SC2,,並執行一互斥 或運算於已接收之控制訊號SC1,以及SC2,以產生第3圖中所示之 時脈訊號sebek’並將其傳送至充電泵單元164。處理單元166係根 據已接收之控制訊號SCI’以及SC2,來選擇性地產生資料訊號或指 令訊號,並傳送至充電泵單元164。舉例來說,處理單元166可於 控制訊號SCI’以及SC2,皆處於邏輯值”1”時產生一指令訊號 ©sc_iand ;接著,當控制訊號SCI’處於邏輯值,,〇,,以及控制訊號SC2, 處於邏輯值”1”時,處理單元166將邏輯值,,〇”設定於指令訊號 S command 中;當控制訊號SCI,處於邏輯值”1”以及控制訊號SC2,處於 邏輯值”〇”時,處理單元166將邏輯值”丨,’設定於指令訊號Sw)mmand 中。此外’處理單元166可於控制訊號SCI’以及SC2,皆處於邏輯 值時產生一資料訊號Sdata;接著,當控制訊號SCI,處於邏輯值,’0’, 以及控制訊號SC2’處於邏輯值”1”時,處理單元166將邏輯值,,〇,’設 定於資料訊號Sdata中;當控制訊號SCI,處於邏輯值”1”以及控制訊 號SC2’處於邏輯值”〇”時,處琿單元166將邏輯值”1”設定於資料 201031094 訊輩sdata中。因此,處理單元166可得到所需的指令訊號心。_^ 的訊號值(例如第3圖中所示之邏輯值,,011〇,,)以及資料訊號心恤的 訊號值(例如第3圖中所示之邏輯值” 1〇1,,)。充電泵電路16〇可根據 時脈訊號sck)ck’、指令訊號Sc&lt;jmraand以及資料訊號心咖來設定泵浦倍 數PF1並產生兩個輸出電壓vsp、VSN,舉例來說,在此實施例中, 充電栗電路160根據邏輯值為,,0110”的指令訊號來將系浦倍 數PF1設定為4/3。 由第1圖可4于知’充電栗電路16〇係設置於軟性印刷電路板15〇 上’而非設置在顯示裝置110之驅動電路13〇的那一端,也就是說, 由於不會受到銦錫氧化物(Indium Tin 〇xide,IT〇)電阻r的限制, 因此可大幅改善充電系電路16〇的電壓轉換效率。此外,僅需要兩 個控制訊號SC1(SC1,)、SC2(SC2,)即可控制充電泵電路16〇的電壓 、《率如此來,可將充電栗電路刷的接腳(pin)數量減到最 低以達到降低成本的目的。 請注意, 上述之顯示裝置110射為—薄輯晶體液晶顯示裳 置’而驅動電路13〇係可為—薄膜電晶體液晶顯示驅動晶片,但: 發明並不侷限於此。此外, ’控制槔的數量也縣翻之限制條件。On the Tmnsistor_Liquid Crystal Display (TFT-LCD) device, as the size of the screen becomes larger and larger, the current consumed by the device is also increasing. If the charging pump circuit is mounted on the thin film transistor liquid crystal display device, the driving is performed. The circuit end is limited by the resistance of the Indium Tin Oxide (ITO) film, and the voltage conversion efficiency is thus deteriorated. 4 201031094 + The other two, because the system side hopes to directly supply the input voltage of 2.0V~4.8V to the drive circuit of the (5) body I display 4, so the charge pump circuit must be able to support different multiples (such as i $ The power conversion ratio of double, double or triple) provides the desired output voltage. SUMMARY OF THE INVENTION The present invention is directed to providing a detailed system to solve the above problems. The present invention discloses a display device comprising a display device, a drive circuit j - a flexible printed circuit board, a charge pump circuit and a control circuit. The drive circuit is disposed on the display device for driving the device of the age. The recording printed circuit board is connected to the display device. The charging circuit is disposed on the flexible printed circuit board </ RTI> for generating at least one output voltage to the driving circuit. The control circuit is set on the display and is secreted on the circuit, and the wire generates a plurality of control signals, which are followed by a green pump circuit. The Weixian circuit has a plurality of control ports _ of the __ control circuit for respectively receiving the control signals generated by the control circuit. The invention further discloses a display system comprising a display device, a drive circuit, a flexible printed circuit board, a charge pump circuit and a control circuit. The driving circuit is disposed on the display device for driving the display device. The flexible printed circuit board is externally coupled to the display device. The charge pump circuit is disposed on the flexible 201031094 printed circuit board for generating at least an output voltage to the drive circuit. The control circuit is disposed on the display device and is input to the driving circuit for generating a control signal and controlling the charging circuit. The charge pump circuit has a first control port connected to the control circuit for receiving the control signal generated by the control circuit for receiving a reference voltage.乂 第 第 第 第 第 第 第 第 第 第 第 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在The general knowledge of the >1 field towel should be understandable, the hardware manufacturer can refer to the same component. In this manual and in the following, the difference between the patent and the : is called the way to distinguish the components, but the function is "3" as an open term, so it should be interpreted as "including but not limited to" . "Coupling" - the term contains any direct and indirect electrical connection means τ 亩 & </ </ > </ RTI> </ RTI> </ RTI> </ RTI> means that the second device means that the first event can be directly electrically connected to the whistle —κ ^ ^ ^ I am electrically connected to the second = or indirectly through the other means of connection, in this turn over the real towel, filled with peaches, crystals, liquid crystal π road towel moved to the soft _ circuit board Because "to consider how to suppress the operation of the charge pump circuit on the printed circuit board. Please refer to the first! BRIEF DESCRIPTION OF THE DRAWINGS A schematic diagram of a display system in an embodiment of the present invention. The display system i00 package 201031094 includes (but is not limited to) a display device 110, a panel 120, a drive circuit, a control circuit 140, a flexible printed circuit board 150, and a charge pump circuit 16A. The panel 120 is disposed on the display device 11A, and the driving circuit 13 is also disposed on the display device 110 for driving the panel 120. The control circuit 140 is also disposed on the display device 11A and coupled to the driving circuit 130 for generating a plurality of control signals, such as SC1/SC1, and SC2/SC2', to control the operation of the charge pump circuit 160. The flexible printed circuit board 150 is externally coupled to the display device 11A, and the charge pump circuit 16 is disposed on the flexible printed circuit board 150 for controlling signals SC1/SC1' generated by the control circuit 140 and SC2/SC2' generates at least one output voltage to the driving circuit 13A. In addition, the charge pump circuit 160 includes a plurality of control ports (e.g., 162j and 162_2), a charge pump unit 164, and a processing unit 166. In this embodiment, the control unit 162_b 162_2 is coupled to the control circuit 140 for receiving the control signals SC1/SC1 and SC2/SC2 generated by the control circuit H0, respectively. The charging unit 164 is configured to generate at least the output voltage to the driving circuit 130. The processing unit ι 66 is additionally connected between the control ports 162 1-1, 162_2 and the charge pump unit 164 for receiving the control signals SC1/SC1 and SC2/SC2 generated by the control circuit 140 by controlling the 蟑 162_1, 162_2, And controlling the charge pump unit 164 based on the control signals SC1/SC1, and SC2/SC2. The charge pump circuit 160 sets a pumping factor PF1 according to the control signals SC1/SC1, and SC2/SC2' and generates two output voltages VSP, VSN, wherein the output voltages VSP, VSN are transmitted to the driving circuit. 13〇• for its use. The details of the control circuit 140 and the charge pump circuit 160 and their associated operation will be described in further detail in the following figures and embodiments. The present invention is described in detail with reference to the drawings, however, this is not a limitation of the present invention. Please refer to Fig. 2 and Fig. i at the same time. Figure 2 is the control signal SC1 and [, one clock signal and processing signal 81) 1* from top to bottom. . Move the timing diagram. The control circuit "o" generates control signals SC1 and SC2 according to the demand of the drive circuit no to control the charge pump circuit 16A. The processing unit 166 in the charge pump circuit 160 receives the control signals SCI and SC2 through the control port 162, respectively. And performing a mutual exclusion or (exdusive 〇 r, x 〇 R) operation on the received control signals SCI and SC2 to generate the clock signal sdwk shown in the second ® and transmit it to the charge pump unit 164. Unit 166 selectively generates a data signal or command (c〇_and) signal based on the received control sfl numbers SCI and SC2 and sends it to charging pump unit 164, for example, as shown in FIG. 2, The unit 166 generates a reset signal Rst when the control signals SC1 and SC2 are at the logic value (, but this is not a limitation of the present invention. In other embodiments, the processing unit 166 can also control the signal SC1. And SC2 is in a logic value, 〇" generates a reset signal); when the control signal SCI is at a logic value, 〇,, and the control signal SC2 is at a logic value, T, the processing unit 166 will logically, ” Set in the processing signal Sprocess, and when the control signal SCI is at the logic value "丨" and the control signal SC2 is at the logic value, 0, the processing unit 166 sets the logic value "1" in the processing signal SProcess. Therefore, the processing unit 166 can obtain a processing condition of 8 to 10 (for example, the logical value ''〇11〇〇' shown in FIG. 2) between the two reset signals, for example, The processing signal SprQeess can be a data signal or a command signal. The charge pump circuit 16 can set the pump multiple PF1 according to the clock signal sck)ek and the processing signal sprocess and generate two 201031094 output voltages Vsp, VSN, For example, in the present embodiment, the charge pump circuit 160 sets the polyploid PF1 to 3/2 based on the processing signal Sp_s having a logical value of "01100". In another embodiment of the invention, the control circuit 14 generates two additional control signals SCI' and SC2' to control the charge pump circuit 16A. Please refer to Fig. 3 and Fig. 3's Fig. 3 for the timing diagrams of the control 峨SC1' and SC2, the clock signal reference Scl°ck' and the processing signal Spraeess from top to bottom. The processing unit 166 receives the control signals SC1 and SC2 through the control ports 162_1, 162-2, respectively, and performs a mutual exclusion or operation on the received control signals SC1 and SC2 to generate the image shown in FIG. The clock signal sebek' is transmitted to the charge pump unit 164. The processing unit 166 selectively generates a data signal or an instruction signal based on the received control signals SCI' and SC2, and transmits the data signal to the charge pump unit 164. For example, the processing unit 166 can generate an instruction signal ©sc_iand when the control signals SCI' and SC2 are both at the logic value "1"; then, when the control signal SCI' is at the logic value, 〇,, and the control signal SC2 When the logic value is "1", the processing unit 166 sets the logic value, 〇" in the command signal S command; when the control signal SCI is at the logic value "1" and the control signal SC2, at the logic value "〇" The processing unit 166 sets the logical value "丨," in the command signal Sw) mmand. In addition, the processing unit 166 can generate a data signal Sdata when the control signals SCI' and SC2 are both at a logic value; then, when the control signal SCI is at a logic value, '0', and the control signal SC2' is at a logic value "1" When the processing unit 166 sets the logic value, 〇, 'in the data signal Sdata; when the control signal SCI is at the logic value "1" and the control signal SC2' is at the logic value 〇", the unit 166 will The logical value "1" is set in the data 201031094 sdata. Therefore, the processing unit 166 can obtain the desired command signal heart. The signal value of _^ (such as the logical value shown in Figure 3, 011〇,,) and the signal value of the data signal (such as the logical value shown in Figure 3) 1〇1,,). The charge pump circuit 16A can set the pump multiple PF1 according to the clock signal sck)ck, the command signal Sc&lt;jmraand, and the data signal heart, and generate two output voltages vsp, VSN, for example, in this embodiment. The charging pump circuit 160 sets the system multiplier PF1 to 4/3 according to the logic value, the command signal of 0110". It can be seen from Fig. 1 that the 'charger circuit 16 is provided on the flexible printed circuit board 15' instead of the end of the drive circuit 13 of the display device 110, that is, since it is not exposed to indium. Since the tin oxide (Indium Tin 〇xide, IT〇) resistor is limited, the voltage conversion efficiency of the charging system circuit 16A can be greatly improved. In addition, only two control signals SC1 (SC1,), SC2 (SC2,) are required to control the voltage of the charge pump circuit 16〇, and the rate can be reduced to the number of pins of the charging pump circuit brush. The lowest is to achieve the purpose of reducing costs. Note that the display device 110 described above may be a thin crystal liquid crystal display device and the driving circuit 13 may be a thin film transistor liquid crystal display driving chip, but the invention is not limited thereto. In addition, the number of control 也 is also restricted by the county.

凡里汞冤路460的控制埠462 1、462 另一實施例中顯示系統400的 丨0的差異在於顯示系統400中 2兩者之其一係耦接於一 201031094 電獅Vr (例如Vss或Vdd),因此,控制電路4則堇需藉由一控制 訊號Sct5ntrol來控制充電泵電路460的運作。處理單元466係根據押 制訊號scratrol來提供一時脈訊號至充電泵單元464,並根據固定電 獅Vr來設定-泵浦倍數PF。舉例來說,找奴電路46〇的控 制璋462_1輕接於-接地參考電壓源,充電栗單元4私的果浦倍數 PF可被設為3/2 ’因此’充電泵電路46〇僅能工作於一固定的果浦 狀態。 ^ 參 以上所述的實施例僅用來說明本發明之技術特徵,並非用來偈 限本發明之範嘴。由上可知,本發明提供一種將一充電栗電路設置 在顯示裳置外部之-軟性印刷電路板上的顯示系統其能大幅提升 充躲電路的賴轉換效率。此外,本發明之顯示系統只需要利用 至少兩個控制埠即可控制充電泵電路的電壓轉換倍率。 以上所述僅為本發狀較佳實關,凡依本伽㈣專利範圍 ❹所做之均等變化與修飾,皆朗本發明之涵蓋範圍。 【圖式簡單說明】 第1®為本發明—實施例中顯示系統的示意圖。 第圖刀別為兩個控制訊號、一時脈訊號以及一處理訊號的時序圖。 第3圖分別為另兩個控制訊號、一時脈訊號以及一處理訊號的時序 圖。 11 201031094 第4圖為本發明另一實施例中顯示系統的示意圖。 【主要元件符號說明】The control 凡 462 1 , 462 of the display of the system 400 is another difference in the display system 400 in which two of the display system 400 are coupled to a 201031094 electric lion Vr (for example, Vss or Vdd), therefore, the control circuit 4 does not need to control the operation of the charge pump circuit 460 by a control signal Sct5ntrol. The processing unit 466 provides a clock signal to the charge pump unit 464 according to the scratol signal, and sets the pump multiplier PF according to the fixed electric lion Vr. For example, the control 璋 462_1 of the slave circuit 46 轻 is connected to the ground reference voltage source, and the private PF PF of the charge pump unit 4 can be set to 3/2 'so the 'charge pump circuit 46 〇 can only work In a fixed Guopu state. The embodiments described above are merely illustrative of the technical features of the present invention and are not intended to limit the scope of the present invention. As can be seen from the above, the present invention provides a display system in which a charge pump circuit is disposed on a flexible printed circuit board outside the display panel, which can greatly improve the conversion efficiency of the charging circuit. Furthermore, the display system of the present invention only needs to control the voltage conversion ratio of the charge pump circuit by using at least two control ports. The above description is only for the purpose of the present invention, and the equivalent changes and modifications made by the gamma (4) patent scope are all covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The first embodiment is a schematic view of a display system in the present invention. The picture cutter is a timing diagram of two control signals, a clock signal, and a processing signal. Figure 3 shows the timing diagrams of the other two control signals, one clock signal, and one processing signal. 11 201031094 Figure 4 is a schematic diagram of a display system in accordance with another embodiment of the present invention. [Main component symbol description]

100、400 顯示系統 110、410 顯示裝置 120、420 面板 130、430 驅動電路 140、440 控制電路 150、450 軟性印刷電路板 160、460 充電泵電路 162」、162_2、462_1、462_2 控制埠 164 &gt; 464 充電泵單元 166、466 處理單元 12100, 400 display system 110, 410 display device 120, 420 panel 130, 430 drive circuit 140, 440 control circuit 150, 450 flexible printed circuit board 160, 460 charge pump circuit 162", 162_2, 462_1, 462_2 control 埠 164 &gt; 464 charge pump unit 166, 466 processing unit 12

Claims (1)

201031094 七、申請專利範圍: 1· 一種顯示系統,包含有: 一顯示裝置; -驅動電路,設置於該顯示裝置上,用來驅動該顯示裝置丨 一軟性印刷電路板(flexible printed circuit,FPC),以冰址 接於該顯示裝置;)辑接方式麵 參 一充電栗(―柳鳄)電路,設置於該軟性印刷電路板上,用來 產生至少一輸出電壓至該驅動電路;以及 -控制電路,設置於該顯示裝置上並祕於該驅動電路,用來產 生複數個控制訊號以控制該充電泵電路; 其中該充電栗電路具有搞接於該控制電路的複數個控制埠 (control _) ’时分別接钱控概路所產生的該她制訊號。 2_如申料娜圍第丨顿述之顯示祕,其巾該充躲電路包含 有: 一充電泵單元,用來產生至少該輸出電壓至該驅動電路;以及 一處理單元,耦接於該些控制埠以及該充電泵單元之間,用以藉 由該些控制埠來接收該控制電路所產生的該些控制訊號,以 及根據該些控制訊號來控制該充電泵單元。 3.如申請專利範圍第2項所述之顯示系統,其中該處理單元係執行 一互斥或(exclusiveor’XOR)運算於該些已接收之控制訊號,以產 13 201031094 生一時脈訊號至該充電泵單元。 訊號至該充電泵單元 4.如申請專利範,項所述之顯示祕,其中該處理單元係根據 該些已接收之㈣訊號來選擇性地產生資料訊號或指令⑹咖响 5.如申請專利範圍第2項所述之顯示系統’其中該處理單元係藉由 比較該些已接收之控制訊號的邏輯值來選擇性地產生資料訊號 曰 指令訊號至該充電泵單元。 _ 6.如申請專利範圍第i項所述之顯示系統,其中該顯示裝置係為— 薄膜電晶體液晶顯示(thin-fihn如以―liquid巧咖, TFT-LCD)裝f ’以及該驅動電路係為—薄膜電晶體液晶顯示驅動 7. —種顯示系統,包含有: 一顯示裝置; -驅動電路,設置⑽顯示裝置上,用來驅賴顯示裝置; -軟性印刷電路板,以外接方式_於該顯示裝置;’ -充電栗電路,設置於該軟性_電路板上,絲產生至少—輸 出電壓至該驅動電路;以及1 -控制電路,設置於該顯示裝置上並純於該驅動電路,用來產 生一控制訊號以控制該充電泵電路; 14 201031094 其中該充電泵電路具有耦接於該控制電路的一第一控制埠,用來 接收該控制電_產生賴控她號,以及_第二控制埠,用來 接收一參考電壓。 8·如U利範圍第7項所述之顯示系統,其中該充電泵電路包含 有: 充電泵單7L,用來產生至少該輸出電壓至該驅動電路;以及 ❹ $理單兀’祕於該第—蝴埠、該第二控辦以及該充電泉 單7G ’用以藉由該第-控辦來接收該控制電路所產生的該 控制訊號以及藉由該第二控制埠來接收該參考電壓,以及根 據該控制訊號以及該參考電壓來控制該充電泵單元。 9’如申請專利範圍第8項所述之顯示系統,其中該處理單元係根據 該控制訊號來提供一時脈訊號至該充電果單元,並根據該參考電 _ 壓來設定·一系浦倍數(pumping factor)。 W 10.如申請專利範圍第7項所述之顯示系統,其十該參考_具有 一固定電壓位準。 如申請專利範圍第7項所述之顯示系統,其中該顯示裝置係為 —薄膜電晶體液晶顯示裝置,以及該驅動電路係—_電晶體液 晶顯示驅動晶片。 八、圖式: 15201031094 VII. Patent application scope: 1. A display system comprising: a display device; a driving circuit disposed on the display device for driving the display device flex a flexible printed circuit (FPC) Connected to the display device with an icy address;) a splicing method for a charging pump ("willow crocodile" circuit, disposed on the flexible printed circuit board for generating at least one output voltage to the driving circuit; and - controlling a circuit disposed on the display device and secreted to the driving circuit for generating a plurality of control signals to control the charge pump circuit; wherein the charge pump circuit has a plurality of control ports (control _) connected to the control circuit 'When the money is controlled separately, the signal generated by the road is generated. 2_such as Shen Na Na Di 丨 之 述 , , , , , , , , , 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该The control unit and the charging pump unit are configured to receive the control signals generated by the control circuit by using the control ports, and control the charge pump unit according to the control signals. 3. The display system of claim 2, wherein the processing unit performs an exclusive or XOR operation on the received control signals to generate a time signal to 13 201031094 Charge pump unit. Signal to the charging pump unit 4. The display unit described in the patent application, wherein the processing unit selectively generates a data signal or an instruction according to the received (four) signals (6) coffee. 5. The display system of claim 2, wherein the processing unit selectively generates a data signal command signal to the charge pump unit by comparing logic values of the received control signals. 6. The display system of claim i, wherein the display device is a thin film transistor liquid crystal display (thin-fihn such as "liquid", TFT-LCD) and the driving circuit The system is a thin film transistor liquid crystal display driver 7. A display system includes: a display device; a driving circuit, and (10) a display device for driving the display device; - a flexible printed circuit board, an external connection method _ In the display device; a charging circuit is disposed on the flexible circuit board, the wire generates at least an output voltage to the driving circuit; and a control circuit is disposed on the display device and is pure to the driving circuit. Used to generate a control signal to control the charge pump circuit; 14 201031094 wherein the charge pump circuit has a first control port coupled to the control circuit for receiving the control power_generation control number, and _ The second control unit is configured to receive a reference voltage. 8. The display system of claim 7, wherein the charge pump circuit comprises: a charge pump unit 7L for generating at least the output voltage to the drive circuit; and The first control unit, the second control unit, and the charging spring unit 7G' are configured to receive the control signal generated by the control circuit by the first control office and receive the reference voltage by using the second control unit And controlling the charge pump unit according to the control signal and the reference voltage. The display system of claim 8, wherein the processing unit provides a clock signal to the charging fruit unit according to the control signal, and sets a one-shot multiplier according to the reference voltage ( Pumping factor). W 10. The display system of claim 7, wherein the reference_ has a fixed voltage level. The display system of claim 7, wherein the display device is a thin film transistor liquid crystal display device, and the drive circuit system is a transistor liquid crystal display driving wafer. Eight, schema: 15
TW99103811A 2009-02-12 2010-02-08 Display system TWI399908B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/370,585 US8194060B2 (en) 2008-10-29 2009-02-12 Display system

Publications (2)

Publication Number Publication Date
TW201031094A true TW201031094A (en) 2010-08-16
TWI399908B TWI399908B (en) 2013-06-21

Family

ID=44860605

Family Applications (2)

Application Number Title Priority Date Filing Date
TW99103811A TWI399908B (en) 2009-02-12 2010-02-08 Display system
TW099104367A TWI505616B (en) 2009-02-12 2010-02-11 Display system

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW099104367A TWI505616B (en) 2009-02-12 2010-02-11 Display system

Country Status (1)

Country Link
TW (2) TWI399908B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI550591B (en) * 2015-06-04 2016-09-21 友達光電股份有限公司 Display device and method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002952A (en) * 1997-04-14 1999-12-14 Masimo Corporation Signal processing apparatus and method
JP3827917B2 (en) * 2000-05-18 2006-09-27 株式会社日立製作所 Liquid crystal display device and semiconductor integrated circuit device
JP3944394B2 (en) * 2002-01-08 2007-07-11 株式会社日立製作所 Display device
TW578122B (en) * 2002-06-05 2004-03-01 Au Optronics Corp Driving circuit for thin film transistor liquid crystal display
KR20050085144A (en) * 2002-11-25 2005-08-29 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Multi output dc/dc converter for liquid crystal display device
KR100832612B1 (en) * 2003-05-07 2008-05-27 도시바 마쯔시따 디스플레이 테크놀로지 컴퍼니, 리미티드 El display
JP3846469B2 (en) * 2003-10-01 2006-11-15 セイコーエプソン株式会社 Projection display device and liquid crystal panel
EP1895545B1 (en) * 2006-08-31 2014-04-23 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
JP5177999B2 (en) * 2006-12-05 2013-04-10 株式会社半導体エネルギー研究所 Liquid crystal display

Also Published As

Publication number Publication date
TW201031095A (en) 2010-08-16
TWI505616B (en) 2015-10-21
TWI399908B (en) 2013-06-21

Similar Documents

Publication Publication Date Title
US10692439B2 (en) OLED display panel and OLED display device
TWI240245B (en) Driving apparatus and display module
US10115334B2 (en) Display driving circuit and display device including the same
TWI573122B (en) Touch screen panel integrated display device and display panel
CN106557194B (en) Driver IC and display equipment including the driver IC
TWI452556B (en) Driving device, display apparatus having the same and method of driving the display apparatus
JP5811129B2 (en) Electro-optical device and electronic apparatus
CN105741785B (en) Data driver and the display device using the data driver
US10535317B2 (en) Shift register and display device including the same
TW200947381A (en) Flat display
US20090174692A1 (en) Pixel driving circuit and a display device having the same
CN106328033B (en) Power supply and the display equipment for using the power supply
US20070008266A1 (en) Liquid crystal display device and electronic device
WO2015188406A1 (en) Electronic device capable of reducing driving chip
TW201021011A (en) Liquid crystal display device
CN108962118A (en) GOA unit, GOA circuit and its driving method, array substrate
TWI474306B (en) Display system
US9280926B2 (en) Control board and display device using the same
TWI457906B (en) Saving circuit area of ​​the display panel drive circuit
TW201031094A (en) Display system
US20100118011A1 (en) Display system
US20140022229A1 (en) Gate driver and display device including the same
US8310429B2 (en) Discharge circuit and liquid crystal display using the same
US9360693B2 (en) LCD panel with new control line topology
TW201033964A (en) Display panel driving circuit with driving capacitor